The R7 Ketelec – Dunajská Lužná Section starts at the planned elevated “Ketelec” crossing (R7 with the D4 motorway). The R7 expressway Section ends at the elevated “Dunajská Lužná” crossing (R7 with the I/63 road) between Dunajská Lužná and Šamorín, where it connects to the planned “Dunajská Lužná – Holice” Section of the R7 expressway.

The purpose of the upcoming building is the construction of a high capacity, directionally divided four-lane expressway in an optimal route regarding its location outside urban areas, connection to existing and planned road network system of Bratislava (D4, R7 Bratislava Prievoz – Ketelec), as well as in terms of traffic flow and safety sufficient road, whilst respecting the environment and nature protection. Construction and operation of R7 Expressway will exclude transit traffic from the road I/63 (Svornosti street in Bratislava district Podunajské Biskupice), as well as from urban areas of villages Rovinka and Dunajská Lužná, which will improve traffic situation on the road I/63 and the environmental protection in the surrounding area.

After the construction of the R7 Expressway the negative effects of transport on the environment will be reduced; road safety and traffic flow will improve and accident rates will be reduced. Positive impact of the R7 Expressway is also expected regarding the protection of population against noise pollution.

The beginning of this section starts at the planned interchange "Ketelec" (R7 and D4 crossing), near the gravel mine area of Podunajské Biskupice, about 1,8 km south of the Slovnaft area in Bratislava district Podunajské Biskupice, where it continues the section of R7 Expressway Bratislava Prievoz – Ketelec. The R7 Expressway route bypasses the protected territory of European importance NATURA 2000, Ramsar locality of Dunajské Luhy and the protected area of Dunajské Luhy, at a distance of about 159 m to 200 m and follows further in south-eastern direction southwest of villages Rovinka and Dunajská Lužná, bypassing biocentre of local importance mBC3 Lučina and a pond in mBC1 Kamenný pasienok. Between villages Dunajská Lužná and Kalinkovo it crosses the remains of a former arm of Danube, the old embankment of the Danube and existing road III/0635 via an elevated bridge. This section of R7 Expressway ends at the interchange "Dunajská Lužná" (R7 and road I/63 crossing) between the village Dunajská Lužná and town Šamorín, where it will join the next section of R7 Expressway Dunajská Lužná – Holice.